Add an option to periodicaly poll the device to get the buttons states
as the interrupt line may not be used on some platforms.
Signed-off-by: Michal Vokáč <michal.vokac@xxxxxxxxx>
---
I am not sure how to propperly handle this.
Either interrupt or linux,poll-interval is required, but not both.
.../bindings/input/fsl,mpr121-touchkey.yaml | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml
index c463c1c81755..2b3073a3c9f4 100644
--- a/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml
+++ b/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml
@@ -34,6 +34,10 @@ properties:
minItems: 1
maxItems: 12
+ linux,poll-interval:
+ description: Poll interval time in milliseconds.
+ maxItems: 1
+
wakeup-source: Use any event on keypad as wakeup event.
type: boolean
@@ -44,12 +48,12 @@ properties:
required:
- compatible
- reg
- - interrupts
- vdd-supply
- linux,keycodes
examples:
- |
+ // Example with interrupts
#include "dt-bindings/input/input.h"
touchkey: mpr121@5a {
compatible = "fsl,mpr121-touchkey";
@@ -62,3 +66,17 @@ examples:
<KEY_4> <KEY_5>, <KEY_6>, <KEY_7>,
<KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>;
};
+
+ - |
+ // Example with polling
+ #include "dt-bindings/input/input.h"
+ touchkey: mpr121@5a {
+ compatible = "fsl,mpr121-touchkey";
+ reg = <0x5a>;
+ linux,poll-interval = <20>;
+ autorepeat;
+ vdd-supply = <&ldo4_reg>;
+ linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>,
+ <KEY_4> <KEY_5>, <KEY_6>, <KEY_7>,
+ <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>;
+ );
--
2.1.4
